64676865 has 32 divisors (see below), whose sum is σ = 114037632. Its totient is φ = 31040000.

The previous prime is 64676863. The next prime is 64676879. The reversal of 64676865 is 56867646.

It is not a de Polignac number, because 64676865 - 2¹ = 64676863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64676861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14725 + ... + 18605.

It is an arithmetic number, because the mean of its divisors is an integer number (3563676).

Almost surely, 2^64676865 is an apocalyptic number.

It is an amenable number.

64676865 is a deficient number, since it is larger than the sum of its proper divisors (49360767).

64676865 is a wasteful number, since it uses less digits than its factorization.

64676865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001.

The product of its digits is 1451520, while the sum is 48.

The square root of 64676865 is about 8042.1927979874. The cubic root of 64676865 is about 401.4051932162.

The spelling of 64676865 in words is "sixty-four million, six hundred seventy-six thousand, eight hundred sixty-five".